2 METACODE PDF

II//sdss7, Data Release 7 (,, primary sources, plus 65,, that 2 different SDSS objects share the same SDSS name (). 1. J/ApJ//48/sample, Sample source properties (tables 1 and 2) (87 rows) ( Q=QSO, BLZ=blazar, BLRG=broad_line radio galaxy, fnt=faint) (). [0/1] Fmag quality of the PSF fitting Qfit () (CODE_QUALITY). f_Fmag, [0/7] Quality flag (best=1) on Fmag (Note 2) ().

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Avoid global variables Best Practice: And you should be aware that you can return any object in a constructor. Prefer Literals to Constructors.

If you need to know a concept to understand the code, you can either include the name of the concept in an identifier or mention it in a comment. It is thus important to make the former as easy as possible. The rationale is that this convention is more descriptive: Changing undefined explains why.

A Meta Code Style Guide. And there are spaces after commas: But it ketacode clutter, and I expect engines to eventually optimize this pattern. It should tell you how to get started with the code base and provide you with the big picture. These are style guides that I like: If metacodf statement contains a block, that block is considered as somewhat separate from the head of the statement: Avoid the pitfalls of automatic semicolon insertion see Automatic Semicolon Insertion.

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6.2 Metacode

The shift operator can be used to convert a number to an integer. How much whitespace after parentheses, between statements, etc. For details and more examples, consult Pattern: The following two expressions are equivalent: They make it easier to work with HTML code which normally has attribute values in double quotes.

For constructors, it is important to use strict mode, because it protects you against forgetting the new operator for instantiation.

Code Should Be Easy to Understand. ASI can unexpectedly break up statements:. JavaScript has many great style guides.

Documentation should fill in the blanks left by the code and the comments. Whenever you are considering a style question, ask yourself: Using the Or operator to provide default values is a common pattern—for example, for parameters: JavaScript, the winning style examines what the majority of several popular style guides recommend.

As an exception, I omit braces if a statement can be written in a single line. The advantages of this approach are that deleting, inserting, and rearranging lines is simpler and the lines are automatically indented correctly.

Chapter A Meta Code Style Guide

If those functions are small enough and have meaningful names, you can often avoid comments. There are two important rules for writing consistent code. This is more self-explanatory and safer than comparing with undefined or checking for truthiness:. On one hand, JavaScript engines are becoming increasingly smart and automatically optimize the speed of code that follows established patterns.

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Obviously, an object literal is not a code block, but things look more consistent and you are less likely to make mistakes if both are formatted the same way.

Meta Imaging Series Codes

Therefore, redBalloon is easier to read than rdBlln. In languages where braces delimit blocks of code, a brace style determines where you put those braces. Several constructors produce objects that can also be created by literals.

In the latter case, they return a value and while there is a mehacode, you still need to think to figure out what is going on: If you use methods generically, you can abbreviate Object.

More tips for using constructors are mentioned in Tips for Implementing Constructors. The rationale is that such functions are easier to call and understand. Three parts of a code base help: Here are some guidelines for doing that:.

Much cleverness is directed at these optimizations. Tight whitespace I like relatively tight whitespace. They will jump in anywhere and should be able to roughly understand what is going on. Someone reading the code can then turn to the documentation to find out more about the concept. If you do, be sure to measure and meatcode the right pieces. Allman style and 1TBS. Converting a number to an integer.